How can i generate json with two-dimensional array?

Development Programming & Scripting C++
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I wanna generate json file with two-dimensional array as a property like below.

{
“two_dim_array” : [ [0.0, 0.1], [1.0, 1.1] ]
}

How can i generate this json on UE ?

The example of one-dimensional array.

bool UGenerateTwoDimArrayiJson::GenerateTwoDimArrayJsonToFile(FString FilePath) {
	TSharedPtr<FJsonObject> JsonRootObject = MakeShareable(new FJsonObject);

	TArray<TSharedPtr<FJsonValue>> one_dim_array;
	one_dim_array.Add(MakeShareable(new FJsonValueNumber(0.0)));
	one_dim_array.Add(MakeShareable(new FJsonValueNumber(0.1)));
	one_dim_array.Add(MakeShareable(new FJsonValueNumber(1.0)));
	one_dim_array.Add(MakeShareable(new FJsonValueNumber(1.1)));

	JsonRootObject->SetArrayField("one_dim_array", one_dim_array);

	FString OutPutString;
	TSharedRef<TJsonWriter<>> Writer = TJsonWriterFactory<>::Create(&OutPutString);
	FJsonSerializer::Serialize(JsonRootObject.ToSharedRef(), Writer);
	
	return FFileHelper::SaveStringToFile(OutPutString, *FilePath);